I think respectable MSM rarely lie about having sources and sources having said what they claim they said. However, sources can be chosen, and sources can lie,

I think respectable MSM rarely lie about having sources and sources having said what they claim they said. However, sources can be chosen, and sources can lie, so the question is how deep your trust goes. This is why anonymous sources are always very problematic - you can trust that the paper accurately reported that somebody said something, but you have no idea if that somebody was lying or not.